Schiller BOB-CAT 942509J User manual

PARTS MANUAL
MAN 4168251 Rev. A 08-2012
MODELS:
942509J
PREDATOR PRO GTV990-LP GEN LP W61 SIDE DISCHARGE
942510J
PREDATOR PRO GTV990-LP GEN LP W/61 REAR DISCHARGE
942511J
PREDATOR PRO GTV990-LP GEN LP W/72 SIDE DISCHARGE
OPERATOR’S MANUAL 4168252

CALIFORNIA
Proposition 65 Warning
Diesel engine exhaust and some
of its constituents are known to the
State of California to cause cancer,
birth defects and other reproductive
harm.
Californie Proposition 65Avertissement
Leséchappementsdesmoteursdieseletcertains
de leurs composés sont reconnus par l’Etat de
Californie pour être cancérigènes, provoquer
des défauts congénitaux et d’autres dangers en
matière de reproduction.
ADVERTENCIA
AVERTISSEMENT
WARNING
The engine exhaust from this product
containschemicalsknowntotheState
of California to cause cancer, birth
defects or other reproductive harm.
California Advertencia
de la Proposicion 65
El estado de California hace saber que
los gases de escape de los motores diesel
y algunos de sus componentes producen
cáncer, defectos de nacimiento y otros
daños en el proceso de reproducción
humana.
L’
é missiondumoteur de ce mat é rielcon-
tient des produits chimiques que l’Etat de
Californie consid è re ê tre canc é rig è nes,
provoquer des d é fauts cong é nitaux et
d’autres dangers en mati è re de reproduc-
tion.
ElestadodeCaliforniahacesaberquelos
gasesdeescapedeesteproductocontienen
productosquÍmicosqueproducencáncer,
defectos de nacimiento y otros daños en
el proceso de reproducción humana.
CALIFORNIA
Proposition 65 Warning
Battery posts, terminals, wiring
insulation, and related accessories
contain lead and lead compounds,
chemicals known to the State of
California to cause cancer and birth
defects or other reproductive harm.
WASH HANDS AFTER HANDLING.

3
PREDATOR-PRO
LP SERIES IMPORTANT MESSAGE
Thank you for purchasing this Schiller Grounds Care, Inc.product. You have purchased a world class mowing product, one of the
best designed and built anywhere.
This machine comes with an Operation and Safety Manual and a separate Setup, Parts and Maintenance Manual. The useful life
and good service you receive from this machine depends to a large extent on how well you read and understand these manuals.
Treat your machine properly, lubricate and adjust it as instructed, and it will give you many years of reliable service.
Your safe use of this Schiller Grounds Care, Inc.product is one of our prime design objectives. Many safety features are built in, but
we also rely on your good sense and care to achieve accident-free operation. For best protection, study the manuals thoroughly.
Learn the proper operation of all controls. Observe all safety precautions. Follow all instructions and warnings completely. Do not
remove or defeat any safety features. Make sure those who operate this machine are as well informed and careful in its use as
you are.
See a Schiller Grounds Care, Inc.dealer for any service or parts needed. Schiller Grounds Care, Inc.service ensures that you
continue to receive the best results possible from Schiller Grounds Care, Inc.products. You can trust Schiller Grounds Care, Inc.
replacement parts because they are manufactured with the same high precision and quality as the original parts.
Schiller Grounds Care, Inc.designs and builds its equipment to serve many years in a safe and productive manner. For longest life,
use this machine only as directed in the manuals, keep it in good repair and follow safety warnings and instructions. You’ll always
be glad you did. Schiller Grounds Care, Inc.
One Bob Cat Lane
Johnson Creek, WI 53038-0469
08-2012
TABLE OF CONTENTS FIGURES PAGE
SAFETY .....................................................................................................................................................................4
ASSEMBLY AND SETUP ..........................................................................................................................................5-7
MAINTENANCE CHART ..........................................................................................................................................8
MAINTENANCE RECORD ........................................................................................................................................9
MAINTENANCE ........................................................................................................................................................10-16
ADJUSTMENTS.........................................................................................................................................................17-21
BELT REPLACEMENT .............................................................................................................................................22
SPECIFICATIONS......................................................................................................................................................23-26
PARTS SECTION.......................................................................................................................................................27
UPPER ENGINE DECK ASSY..........................FIGURE 1 .......................................................................................28, 29
LOWER ENGINE DECK ASSY/CLUTCH.........FIGURE 2 .......................................................................................30, 31
BUMPER...........................................................FIGURE 3 .......................................................................................32, 33
PROPANE FUEL /CONTROL PANEL..............FIGURE 4 .......................................................................................34, 35
BRAKES/REAR WHEEL..................................FIGURE 5 .......................................................................................36, 37
OIL COOLER....................................................FIGURE 6 .......................................................................................38, 39
HYDRAULICS - FUEL LINES...........................FIGURE 7 .......................................................................................40, 41
HYDROGEAR PUMP........................................FIGURE 8 .......................................................................................42, 43
GENERAC WIRE HARNESS............................FIGURE 9 .......................................................................................44, 45
SEAT ASSEMBLY & ROPS..............................FIGURE 10 .....................................................................................46, 47
FOLDING ROPS KIT ........................................FIGURE 11......................................................................................48, 49
STEERING/DECK LIFT ....................................FIGURE 12 .....................................................................................50, 51
CRADLE ASSEMBLY.......................................FIGURE 13 .....................................................................................52, 53
CRADLE & CASTER ASSEMBLY....................FIGURE 14 .....................................................................................54, 55
61” SIDE DISCHARGE.....................................FIGURE 15 .....................................................................................56, 57
61” REAR DISCHARGE...................................FIGURE 16 .....................................................................................58, 59
72" SIDE DISCHARGE.....................................FIGURE 17 .....................................................................................60, 61
BELTS-CUTTERDECK.....................................FIGURE 18 .....................................................................................62, 63
DECALS-POWER UNIT....................................FIGURE 19 .....................................................................................64, 65
DECALS-CUTTERDECKS ...............................FIGURE 20 .....................................................................................66, 67

4
PREDATOR-PRO
LP SERIES
SAFETY
NOTICE !!!
Unauthorized modications may present extreme
safety hazards to operators and bystanders and
could also result in product damage.
Schiller Grounds Care, Inc. strongly warns against,
rejects and disclaims any modications, add-on
accessories or product alterations that are not
designed,developed,testedandapprovedbySchiller
Grounds Care, Inc.Engineering Department. Any
Schiller Grounds Care, Inc.product that is altered,
modied or changed in any manner not specically
authorized after original manufacture-including the
additionof“after-market”accessoriesorcomponent
parts not specically approved by CGC, Inc.-will
result in the Schiller Grounds Care, Inc.Warranty
being voided.
Any and all liability for personal injury and/or
property damage caused by any unauthorized
modications, add-on accessories or products not
approved by Schiller Grounds Care, Inc.will be
considered the responsibility of the individual(s) or
company designing and/or making such changes.
Schiller Grounds Care, Inc.will vigorously pursue
full indemnification and costs from any party
responsibleforsuchunauthorizedpost-manufacture
modications and/or accessories should personal
injury and/or property damage result.
This symbol means:
ATTENTION!
BECOME ALERT!
Your safety and the safety of others is involved.
Signal word denitions:
The signal words below are used to identify levels
of hazard seriousness. These words appear in this
manualandonthesafetylabelsattachedtoSchiller
Grounds Care, Inc.machines. For your safety and
thesafetyofothers,read andfollow theinformation
given with these signal words and/or the symbol
shown above.
DANGER indicates an imminently hazardous
situationwhich,ifnotavoided, WILL resultindeath
or serious injury.
WARNING indicates a potentially hazardous
situation which, if not avoided, COULD result in
death or serious injury.
CAUTIONindicatesapotentiallyhazardoussituation
which,ifnotavoided,MAY resultinminorormoderate
injury. It may also be used to alert against unsafe
practices or property damage.
CAUTION used without the safety alert symbol
indicates a potentially hazardous situation which, if
not avoided, MAY result in property damage
MODEL NUMBER: This number appears on
sales literature, technical manuals and price lists.
SERIAL NUMBER: This number appears only
on your mower. It contains the model number
followed consecutively by the serial number.
Use this number when ordering parts or seeking
warranty information.

5
PREDATOR-PRO
LP SERIES
ASSEMBLY AND SETUP
TOOLS REQUIRED FOR ASSEMBLY
- Wrecking bar
- Claw hammer
- Ratchets: 3/8”,e
- Sockets: 9/16”, 3/4"
- Wrenches: 3/8", 9/16", 3/4"
- Straight edge
- Tire pressure gauge
- Blocks (for deck leveling)
NOTE: All references below to the “right” or “left” are with respect to an operator at the controls.
1. UNCRATE UNIT
Discard packing materials. Remove and discard shipping brackets. Tighten caster wheel axle bolts
against caster axle spanner bushings.
2. 72" in. deck models: Tires need to be installed using eight 64187-03 wheel nuts included in hardware
bag. Torque nut to 75 - 110 ft./lbs.
3. Set rear tire pressures to 12 lbs/in2(0.8 kg/cm2). Tires are overinated for shipping. Front tires are no at
tires
4. DECK LEVELING
a) Park the machine on a smooth, level surface.
Raise the deck to the transport position.
b) SIDE DISCHARGE: Lower the deck onto a pair
of equal height blocks Aunder the rear corners
of the deck. Place another pair of adjustable
blocks Aunder the front of the deck so that the
deck top is level.
REAR DISCHARGE: Lower the deck onto a pair
of equal height blocks Aunder the rear corners
of the deck. Place another pair of adjustable
blocks Aunder the front of the deck so that the
deck is level.
NOTE: The front and rear of the deck are at different
heights.
c) Measure the height of the blade cutting edge
above the ground. Remove pin Cand set the
height of cut lever Dto that height.
d) Loosen nuts Iat all four corners of the deck.
NOTE: This will relieve tension on chains H.
e) Loosen the jam nuts Eon the height of cut clips
Fand adjusting screws G. Turn the adjusting
screws Guntil the play is taken out of the chains
Hat all four corners. Tighten the jam nuts E
against the clips Fand at the adjusting screws G.
Retighten nuts Iat this time.

6
PREDATOR-PRO
LP SERIES
ASSEMBLY AND SETUP
5. COUNTERBALANCE SPRINGS
a) Raise the cutterdeck all the way.
b) Adjust the spring Awith nut B:
Approximately 1" of threads should be extending
past the spring mounting bracket at nut B.
The springs may be tightened or loosened from
this point according to personal preference.
6. ROPS (Roll Over Protection Structure)
The ROPS reduces the risk of serious or fatal injury
in the unlikely event of a tip over, although the
system cannot protect the operator from all possible
injuries. It is not designed, made, or intended to
provide protection for a machine that is driven off an
embankment, retaining wall or similar situation. A
ROPS does not replace the need to exercise care
when operating on slopes.
IMPORTANT:
a) Do not cut, drill, modify or repair a ROPS
structure in any manner..
b) Always replace a damaged ROPS.
c) Inspect roll bar and seat belts for damage or
loose hardware before use. Tighten/replace
any loose/damaged hardware. Replace worn or
damaged seat belts.
SET UP: Remove cotter pin Dfrom hitch pin C.
Pull out hitch pin C, rotate upper hoop to the upright
position. Reinstall hitch pin C. Reinstall cotter Pin D
through hitch pin C.
Insure that the lynch pins L are securely in the seat
plate pin P.
This ROPS is certied for use on machines with a
maximum gross vehicle weight (GVW) of 2000 LB.
The GVW includes the weight of the base machine,
operator, fuel, ROPS and any other attachments and
payloads. When attachments are added, causing
the GVW of the machine to be more than 2000 LB.,
the ROPS may not provide adequate protection
resulting in serious injury or death. Use caution
when installing attachments and DO NOT EXCEED
the GVW rating of the ROPS.
SERIOUS INJURY OR DEATH MAY RESULT
FROM MACHINE ROLLOVER
 • DO NOT OPERATE MACHINE ON STEEP
SLOPES OR NEAR DROP OFFS
 • ALWAYS USE SEAT BELTS WITH ROPS IN
RAISED POSITION
 • AVOID SHARPAND/OR QUICK TURNS
 • DO NOT EXCEED THE MACHINE WEIGHT
RATING OF THE ROPS
ROLLOVER MAY CAUSE PERMANENT INJURY OR DEATH.
• ROPS RAISES THE CENTER OF GRAVITYAND REDUCES STABILITY ON SLOPES.
• SUDDEN STARTS OR TURNS ON RAMPS OR SLOPES CAN CAUSE OVERTURN.
• USE GREATER CARE ON RAMPS AND AS THE SLOPE INCREASES.

7
PREDATOR-PRO
LP SERIES
7. FINAL PREPARATIONS
- Check the engine and hydraulic oil levels. Top up with the correct oil if necessary. Use SAE 10W30
motor oil for the engine. Use fresh, clean SAE 15W40 or SAE 20W50 motor oil or SAE 15W50 synthetic
motor oil for the hydraulic system. After running for one hour, let hydraulic system oil cool. When cold
check levels.
- Remove the battery from the machine. Fill the battery to the bottom of the vent wells with acid and trickle
charge for several hours.
Battery acid is caustic and fumes are explosive and can cause serious injury or death.
Use insulated tools, wear protective glasses or goggles and protective clothing when working with batteries.
Read and obey the battery manufacturer’s instructions.
Be certain the ignition switch is OFF and the key has been removed before servicing the battery.
a) Verify battery polarity before connecting or disconnecting the battery cables.
b) When installing the battery, always assemble the RED, positive ( + ) battery cable rst and the
ground, BLACK, negative ( - ) cable last.
c) Tighten cables securely to battery terminals and apply a light coat of silicone dielectric grease to
terminals and cable ends to prevent corrosion. Keep terminal covers in place.
- Read Operation and Safety Manual before starting.
- Deck can be adjusted to allow for the best horsepower, best quality of cut, or best priping. See deck lev-
eling procedure in the Adjustments Section in this manual to set as desired.
- Run engine at full RPM for 5 minutes before engaging blades to allow the engine to be fully lubricated
before load is applied.
- Check the hydrostat neutral adjustment. Neutral is set at the factory but may require readjustment if
air trapped during the initial oil ll has worked out of the system. See adjustments section later in this
manual.
- Do not use the machine without an approved grass collector, the grass discharge chute or mulching
plates correctly tted.
ASSEMBLY AND SETUP

8
PREDATOR-PRO
LP SERIES
MAINTENANCE CHART
MAINTENANCE
OPERATION
Maintenance is an ongoing job. These intervals are maximum times between
maintenance operations. Perform more often under severe conditions.
FIRST
5
HOURS DAILYEVERY
25
HOURS
EVERY
50
HOURS
EVERY
100
HOURS
EVERY
200
HOURS
EVERY
500
HOURS
ENGINE
Consult the engine manual for additional information and instructions
Check/Top Off
Engine Coolant
Level
(Where Applicable)
X
Check/Top Off
Oil Level X
Check For Leaks X
Clean Air Intake
Screen X
Clean Air Cleaner
Precleaner X*
Clean Air Cleaner
ElementXX**
Clean Cooling Fins X
Change Oil And
Filter XSee engine manufacturer's manual
Check/Replace
Spark PlugsX
* N/A IF EQUIPPED WITH HEAVY DUTY CYCLONIC AIR CLEANER
**IF EQUIPPED WITH HEAVY DUTY CYCLONIC AIR CLEANER
HYDRAULICS
Check For Leaks X
Check/Top Off
Oil Level X
Change Oil And
Filter
XX
MACHINE
Inspect low
pressure regulator
for coolant leaks Annually or every 1500 hours
Rebuild or replace
low pressure
regulatorEvery 2500 hours
Check Interlock
OperationX
Check Tire
PressuresX
Check/Top Off
Battery X
Lubricate All Points X
Check Fuel Shut-off
Internal Filter x
Check T-connector
dust cap is secure x
X
X

9
PREDATOR-PRO
LP SERIES
NOTES
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
________________________________________________
MAINTENANCE RECORD
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10
PREDATOR-PRO
LP SERIES
MAINTENANCE
CHECK DAILY
Operator Presence Interlock System - Start Operation
For the engine to crank, the parking brake must be on, the PTO (blades) off and traction levers in the neutral
lock position. Sit in the seat and check, one by one, if the engine will crank with the parking brake off, the
blades on, and either traction lever out of neutral lock.
Operator Presence Interlock System - Run Operation
The operator must be in the seat for the engine to run with the parking brake off, the traction levers moved out
of the neutral lock position, or the blades on. To check:
1. Start the engine and run at 1/2 throttle with the operator on the machine but raised off the seat.
2. One by one: move the parking brake to the OFF position, traction levers out of the neutral lock position
(check each independently), and turn the blades on. Each check should kill the engine after 1/2 second.
(A 1/2 second delay is built into the system to prevent engine cutout when traversing rough terrain.)
Repair machine before using if the Operator Presence Interlock System does not operate correctly in start or
run. Contact your authorized BOB-CAT dealer.
Hardware
Tighten any nuts and bolts found loose. Replace any broken or missing cotter pins. Repair any other
problems before operating.
Tire pressure
Tires should be kept inated at 12 lbs/in2(.84 kg/cm2). Improper tire ination can cause rapid tire wear and
poor traction. Uneven ination can cause uneven cutting.
BATTERY
Battery acid is caustic and fumes
are explosive and can cause serious injury or death.
Use insulated tools, wear protective glasses or
goggles and protective clothing when working with
batteries. Read and obey the battery manufacturer’s
instructions.
Be certain the ignition switch is OFF and the key has
been removed before servicing the battery.
1. Verify battery polarity before connecting or dis-
connecting the battery cables.
2. When installing the battery, always assemble
the RED, positive ( + ) battery cable rst and the
ground, BLACK, negative ( - ) cable last.
3. When removing the battery, always remove the
ground, negative ( - ) cable rst and the red, posi-
tive ( + ) cable last.
4. Check the electrolyte level every 100 hours of
operation.
5. Clean the cable ends and battery posts with steel
wool. Use a solution of baking soda and water
to clean the battery. Do not allow the solution to
enter into the battery cells.
6. Tighten cables securely to battery terminals and
apply a light coat of silicone dielectric grease to
terminals and cable ends to prevent corrosion.
Keep terminal covers in place.

11
PREDATOR-PRO
LP SERIES
LUBRICATION
Every 50 hours of operation, lubricate the following points (1-4) with grease:
1. Deck lift rockshaft (1 point)
2. Deck lift pivots (6 points)
3. Brake lever pivot (1 point)
4. Push arms (2 points located at rear of cutterdeck under each fuel tank)
5. Isolation mounts (4 points located under seat at front of machine.
6. Caster wheel pivots (2 points)
(Lubricate every 500 hours or once a year)
NOTE ON BLADE SPINDLES -The blade spindles on these machines use a superior sealed bearing that
does not require relubrication.
MAINTENANCE
2
6
22
3
6
2 2
4
4
1
5

12
PREDATOR-PRO
LP SERIES
MAINTENANCE
HYDRAULIC SYSTEM
Fluid level in the hydraulic system should be checked
after the rst 5 hours of operation, and every 100
hours thereafter, or when a leak has occurred. If the
uid is low, check all components for leaks.
To check, remove reservoir cap M. The uid level
should be at the bottom of the ller tube. If low, top
up (do not overll). Use one of the oils listed below:
– SAE 15W40 motor oil
– SAE 20W50 motor oil
– 15W50 synthetic motor oil
AFTER FIRST FIVE (5) HOURS
1. Remove plug Nto drain hydraulic reservoir. Dis-
pose of used oil in accordance with local require-
ments.
2. Clean and replace the plug.
3. Change hydraulic oil lter G.
4. Fill the reservoir with fresh oil to the bottom of
the reservoir ller tube, using an oil from the list
above. Do not overll.
PERIODIC OIL CHANGES
Change the hydraulic uid and hydraulic lter
after each 500 hours of operation using the same
procedure given above.
View from below machine
NOTES:
Before servicing the hydraulic system, stop the engine,
disconnect spark plug wires and disengage the PTO.
– After any hydraulic line is opened, plug or cap it
promptly to reduce the risk of contamination.
– Do not use sealant tape on hydraulic pipe ttings.
Use a liquid sealant that will dissolve into the
system.
– Make sure all hydraulic connections are tight and
hydraulic hoses and lines are in good condition
before applying pressure to system.
The machine's hydraulic system operates under high
pressure. When checking for leaks, do not use your
hands to attempt to nd a leak. Instead, use card-
board or paper. Escaping hydraulic uid can be under
sufcient pressure to penetrate skin and cause serious
injury. If hydraulic uid is injected into the skin, it must
be promptly removed by a doctor familiar with this form
of injury or gangrene may result.

13
PREDATOR-PRO
LP SERIES
MAINTENANCE
ENGINE OIL
Do not perform engine maintenance without the
engine off, spark plug wires disconnected and PTO
disengaged.
AFTER FIRST FIVE (5) HOURS
While the engine is warm:
1. Release the oil drain hose assembly from the
engine clip J. Lay hose assembly over the frame
edge or through the frame cutout, which ever is
most convenient.
2. Remove the rubber cap Dfrom the tip of the
hose assembly and turn the drain valve to allow
oil to drain from the engine. Dispose of used oil
in accordance with local requirements.
3. Clean drain valve and tighten the plastic portion
of the drain valve back into the metal portion of
the valve. Replace rubber cap over the tip of the
valve. Replace hose assembly back into engine
clip.
4. Change oil lter.
5. Fill the crankcase with fresh oil to the full mark.
Do not overll. See engine manual for oil
specications.
DAILY
1. Check oil level with the dipstick.
2. If oil is needed, add fresh oil of proper
viscosity and grade. See engine manual for oil
specications. Do not overll.
3. Replace dipstick before starting engine.
SPARK PLUGS
Remove each plug and check condition.
– Good operating conditions are indicated if the plug has a light coating of grey or tan deposit.
– A white blistered coating indicates overheating. A black coating indicates an “over rich” fuel mixture. Both
may be caused by a clogged air cleaner or improper carburetor adjustment.
– Do not sandblast, wire brush or otherwise attempt to repair a plug in poor condition. Best results are
obtained with a new plug.
– Set plug gap as specied in engine manual..
PERIODIC OIL CHANGES
1. See engine manual for oil and lter change inter-
vals after the break-in period.
2. Follow instructions for rst oil change, above.

14
PREDATOR-PRO
LP SERIES
MAINTENANCE
ENGINE COOLING
Continued operation with a clogged cooling system
will cause severe overheating and can result in en-
gine damage.
- Daily: Clean air intake screen Son air cooled
engines.
- Every 100 hours: Clean cooling ns beneath
blower housing Hwith reference to information in
the engine manufacturer's manual.
HEAVY DUTY CYCLONIC AIR CLEANER
Clean and replace the air cleaner element as
specied in the service chart. Uneven running, lack
of power or black exhaust fumes may indicate a dirty
air cleaner.
To replace air cleaner elements:
1. Unclamp end cover X and remove existing
cleaner elements.
2. Insert new elements Y and Zand replace cover.
Ensure the breathing port Ais pointing down and
towards the front of the tractor.

15
PREDATOR-PRO
LP SERIES
MAINTENANCE
CLEANING MACHINE
Clean the machine after use. The machine will run
cooler and last longer if kept free of clippings and
other debris. A clean machine also reduces the risk
of re due to accumulation of combustible debris and
chaff
Brush or blow clippings and debris off the cutterdeck
and engine deck.
WASHING MACHINE
CAUTION: Improperly washing a machine can cause
water to enter bearings and other components. This
can greatly reduce component life.
– Do not use a pressure washer. Do not direct
water at bearings or seals. High pressure water
can blow past seals and enter sealed bearings.
– Allow the machine to cool down before washing.
Water on a warm machine can be sucked into
sealed bearings as they cool.
– Avoid getting electrical connections wet. Water
can cause electrical faults and corrosion of elec-
trical components.

16
PREDATOR-PRO
LP SERIES
MAINTENANCE
BLADE REMOVAL
Follow these instructions to prevent injury during
blade removal:
1. Loosen with a box wrench or a socket and long
breaker bar. To gain additional leverage, slip a
long pipe or thick-walled tube over breaker bar or
wrench.
2. Insert wood block Aas shown, with grain
perpendicular to blade, to prevent blade from
turning when loosening.
3. Wear thickly padded gloves. Keep hands clear
of blade path. Blades may rotate when bolt
releases.
SHARPENING
Blades may be sharpened by ling or grinding.
- Inspect blades before sharpening.
- Replace bent or cracked blades.
- Replace blades when the lift portion has worn
thin.
-Maintain cut angle at 30o.
-Do not overheat blades when sharpening.
- Always use Schiller Grounds Care, Inc.blades.
Use of another manufacturer’s blades may be
dangerous.
BLADE BALANCE
Blade balance must be maintained at 5/8 oz-in
(19.4 g-cm) or less. Failure to keep blades balanced
causes excess vibration, wear, and shortened life of
most components of the machine.
To balance a blade:
1. Sharpen blade rst.
2. Balance the blade at the center.
3. Attach a 1/8 oz (3.9 g) weight at a distance 5”
(127 mm) from center on the light end. This
should make the light end the heavy end:
- If it does, the blade is balanced.
- If does not, le or grind the heavy end until
the addition of the weight makes the light end
the heavy end.
BLADE INSTALLATION
1. Wear thickly padded gloves to prevent cuts from
the sharp blade.
2. Insert the blade bolt, in order, through the conical
washer (cup side toward the blade, as shown),
the blade, and the blade spacer.
3. Install assembly on the blade spindle.
4. Torque the blade bolt to 70 ft-lbs.
BELTS
All belts are tensioned by spring loaded idlers. No adjustment is required.

17
PREDATOR-PRO
LP SERIES
ADJUSTMENTS
DECK LEVELING
a) Park the machine on a smooth, level surface.
Raise the deck to the transport position.
b) Lower the deck onto a pair of equal height blocks
Aunder the rear corners of the deck. Place
another pair of adjustable blocks Bunder the
front of the deck so that the deck top is pitched
forward 1/8”.
A 1/8" forward pitched deck provides the best horse-
power.
A level deck provides the best quality of cut.
A 1/8" rearward pitched deck provides the best strip-
ing.
Certain grass types and conditions may vary.
NOTE: The front and rear of the deck are at different
heights.
c) Measure the height of the blade cutting edge
above the ground. Remove pin Cand set the
height of cut lever Dto that height.
d) Loosen nuts Iat all four corners of the deck.
NOTE: This will relieve tension on chains H.
e) Loosen the jam nuts Eon the height of cut clips
Fand adjusting screws G. Turn the adjusting
screws Guntil the play is taken out of the chains
Hat all four corners. Tighten the jam nuts E
against the clips Fand at the adjusting screws G.
Retighten nuts Iat this time.
FORWARD PITCH SHOWN

18
PREDATOR-PRO
LP SERIES
ADJUSTMENTS
REAR DECK ROLLERS
The rear outside deck rollers are adjustable up and
down to provide improved deck otation and scalp-
ing protection at various heights of cut. They are not
intended to ride continuously on the ground. Adjust
no closer than 3/8” (10mm) to the ground.
Height of cut ranges for roller adjustment
HEIGHT OF CUT
The height of cut is set by moving height of cut pin C
to the hole designated for the height of cut desired.
To change the height of cut:
1. Lift the deck to the highest position.
2. Move pin Cto the selected hole.
3. Lower the deck until the lift lever is stopped by
the pin.
NOTES:
- Height of cut may vary due to the amount of
tread on the tires, tire diameter or ination pres-
sure.
- For best results, adjust the rear deck rollers for
the height of cut to be used (see below).
COUNTERBALANCE SPRINGS
1. Raise the cutterdeck all the way.
2. Adjust the spring Awith nut B:
The spring length should be set at approximately
8-3/4", inside loop to inside loop, when in
transport position.
The springs may be tightened or loosened from
this point according to personal preference.

19
PREDATOR-PRO
LP SERIES
ADJUSTMENTS
PARKING BRAKE
Park machine on a smooth level surface.
Support the machine with the rear wheels off the
ground, using jack stands or equivalent. DO NOT
rely on mechanical or hydraulic jacks.
1. Remove rear wheels.
2. Measure spring length Owith parking brake Nin
the OFF position.
3. Move parking brake Nto the ON position and
measure length of spring Oagain. When spring
deects 3/8" it is properly adjusted.
4. If adjustment is required, return parking brake N
to the OFF position.
5. Disconnect one end of rod Mat the brake and
loosen jam nut.
6. Adjust rod Min or out as required until 3/8" de-
ection in brake spring Ois achieved with park-
ing brake Nin the ON position.
7. Reconnect rod M and retighten jam nut.
8. Repeat steps 2-7 on opposite side of machine.
9. Replace wheels and tighten wheel nuts.
Parking brake assembly (tire and deck not shown
for clarity - brake in ON position).
This adjustment will cause the brake springs to
stretch 3/8" when the parking brake is in the ON posi-
tion, providing the correct parking brake force without
overloading the brake arm.
NOTE: Parking brake must be in the OFF position to
properly seat brake drums.
CONTROL LEVERS
There are two mounting positions for the control
levers, upper and lower. The lower position works
well for most people. Taller operators may need the
upper position.
To adjust the height of the control levers:
- Remove bolts Aand nuts B.
- Align holes in control lever Dwith appropriate
holes in traction lever bracket C.
- Install bolts Aand nuts B.
The upper mounting hole for the control levers is
slotted to allow fore-aft adjustment and to allow
alignment of the levers.
To adjust or align the control levers:
- Loosen nuts B.
- Adjust control lever position.
- Tighten nuts B.

20
PREDATOR-PRO
LP SERIES
TRACKING HANDLES
An adjustment is provided to allow the operator to
adjust mashine tracking during operation.
1. Turn knob Wclockwise to shorten control lever
travel.
2. Turn knob Wcounter-clockwise to increase con-
trol lever travel.
DAMPERS
Different damper mounting holes have been provided
for various operator preferences with control lever
motion.
1. For a stronger resistance feel, mount the damp-
ers X in the outer most hole Z of the motion
control weldment.
2. For a lighter resistance feel, mount the dampers
X in the inner most hole Vof the motion control
weldment.
FRONT DECK LIP
Adjustable front deck lips have been provided on 61
in. cutterdecks for various cutting conditions.
To revise per conditions:
1. Loosen the front bolts S.
2. Adjust height of H.
3. Retighten S once you have desired height.
ADJUSTMENTS